/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/ViewModels/Stack/NiagaraStackGraphUtilities.h
void GetAllNodesInGroup ( [TArray](API\Runtime\Core\Containers\TArray)< [UNiagaraNode](API\Plugins\NiagaraEditor\UNiagaraNode) * > & OutAllNodes ) const